Near-Surface Fault Structures of the Seulimuem Segment Based on Electrical Resistivity Model

Ismail, Nahed; Yanis, Muhammad; Idris, Syafrizal; Hanafiah, Bukhari

doi:10.1088/1742-6596/846/1/012016

Cited by 13 publications

(10 citation statements)

References 3 publications

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“…In the northern part of Sumatra, the GSF is divided into two branches, which are namely the Aceh fault and the Seulimeuem fault. In contrast, Seulawah Agam Volcano is crossed by Seulimeuem Fault in the west [14].…”

Section: Geological Settingmentioning

confidence: 92%

2d Inversion and Static Shift of Mt and Tem Data for Imaging the Geothermal Resources of Seulawah Agam Volcano, Indonesia

Marwan¹

2019

GEOMATE

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In order to increase the geothermal exploration, the magnetotelluric (MT) method has been used to study the subsurface of the Seulawah Agam volcano, Aceh Province, Indonesia. Similar to all resistivity methods that are based on measuring the electric field on the surface, the MT commonly contains a static shift problem, which is caused by the heterogeneities near the surface and the different topography of the volcano. The static effect can be expressed as a vertical shift from the apparent resistivity curve. In this study, the apparent resistivity data from the 1D inversion of the Transient Electromagnetic (TEM) method were used to correct the static shift problem in the MT data. Both methods were acquired in the same site at ten stations along with a 12 km distance profile that crosses the Seulawah Agam volcano. The north-south profile of the volcano area appeared to host a geothermal system. The 1D inversion in the TEM data shows a low resistivity layer that indicated a cap rock with a thickness up to 1000 m. The area below the cap rock is estimated to be a reservoir zone while the 2D inversion of MT shows that the deep conductor below 2000 m could be the heat source for the Seulawah Agam geothermal system.

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Section: Geological Settingmentioning

confidence: 92%

2d Inversion and Static Shift of Mt and Tem Data for Imaging the Geothermal Resources of Seulawah Agam Volcano, Indonesia

Marwan¹

2019

GEOMATE

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“…1 shows some of the local fault distribution in Mt. Seulawah Agam [18,19]. The results of geophysical exploration using magnetotelluric [20] and transient electromagnetic [18] have provided information on the depth of the main system of the Seulawah Agam volcano, namely, the caprock zone at a depth of 1 km, the reservoir at 2 km, and the heat source at 3 km below the surface.…”

Section: Seulawah Agam Geothermal Systemmentioning

confidence: 99%

A Low-Cost Uav Based Application for Identify and Mapping a Geothermal Feature in Ie Jue Manifestation, Seulawah Volcano, Indonesia

Marwan¹

2021

GEOMATE

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Mt. Seulawah Agam could make a good location for a geothermal power plant with an estimated energy of 150 Mwe. In geothermal exploration, thermal and multispectral imagery is required for surface temperature calculation, subsurface temperature modeling, and mapping of geothermal potential in volcanoes. In general, temperature data and vegetation index are obtained through such satellite images as Landsat, MODIS, and Sentinel. However, satellite images cannot be used for a small area due to the low resolution (> 15 m/px). In this study, the researchers used a small DJI Phantom 4 Quadcopter equipped with the FLIR One and MAPIR Survey 3 sensors to map the heat signatures of a geothermal feature from the Ie Jue geothermal manifestation, Seulawah Agam, Indonesia. An area of 500 m x 430 m has been scanned, and the images were mosaicked and processed using Drone Deploy Cloud and ArcGIS 10.2. Based on the data processing, NDVI data calculated from the MAPIR sensor are capable of showing vegetation contrast with high resolution (5 cm/px) in several manifestations, which also correspond to Landsat-8 imagery. Meanwhile, the FLIR thermal sensor shows a temperature of 85 °C in the manifestation area, which was confirmed by a geo-thermometer and field outcrops. It was proved that, compared to satellite imagery, UAVs could be applied effectively to support the quantitative assessment of geothermal resources in volcanoes.

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“…Bidang kajian *corresponding Author: ayusafrida20@gmail.com http://www.jurnal.unsyiah.ac.id/JAcPS yang dapat memetakan lokasi patahan dengan jelas walau tidak ada penampakan struktur patahan di atas permukaan (Kearey et al, 2002). Pada penelitian sebelumnya penggunaan metode geolistrik dan very low frequency (VLF) mampu mendeliniasikan struktur patahan dengan jelas (Ismail et al, 2016dan Hiskiawan., 2009. Namun pada penelitian ini digunakan metode Ground Penetrating Radar (GPR) yang mampu berkerja lebih fleksibel dan cepat dalam memetakan struktur bawah permukaan di Kecamatan Tringgadeng, Kabupaten Pidie Jaya berdasarkan permitivitas.…”

Section: Pendahuluanunclassified

Investigation of Shallow Fault Structures Using Ground Penetrating Radar Method in Gampong Pangwa Trienggadeng District, Pidie Jaya Regency

2019

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Wilayah Aceh merupakan wilayah yang sering terjadi gempa bumi dengan skala besar. Salah satu gempa bumi dengan skala besar adalah Gempa Pidie Jaya yang terjadi pada 7 Desember 2016. Setelah terjadi gempa bumi, banyak terjadi pergerakan tanah yang ditemukan di area penelitian. Telah dilakukan serangkaian pengukuran menggunakan Ground Penetrating Radar (80 MHz) untuk mempelajari struktur bawah permukaan setelah terjadinya gempa bumi. Penelitian ini dilakukan di Desa Pangwa, Kecamatan Trienggadeng, Kabupaten Pidie Jaya. Pengukuran dilakukan di sepanjang jalan di Desa Pangwa yang melintasi dua jembatan. Pengukuran dilakukan pada 18 lintasan dengan panjang masing–masing lintasan sepanjang 50 m. Pengolahan data dilakukan dengan menggunakan software GRED. Berdasarkan hasil radargram, kita menemukan struktur pemukaan dangkal berupa patahan di tengah gambaran radargram pada lintasan 13 yang disebabkan oleh terjadinya gempa di Pidie Jaya. The Aceh region is an area of frequent large-scale earthquakes. One of the earthquakes with a large scale is Pidie Jaya Earthquake that occurred on December 7, 2016. After the earthquake, many ground movement evidences were found in the area. The ground penetrating radar (80 MHz) measurement is used to study subsurface structures after the earthquake. This research was conducted in Pangwa Village, Trienggadeng Subdistrict, Pidie Jaya District. Measurements were carried out along the road in Pangwa Village which crossed two bridges. Data measurements were made along 18 profiles with 50 m length of each profile. Data processing were done by using GRED software. Based on processed radargrams, we found a fault trace at the middle of the profile lane 13 caused by the newest earthquake in Pidie Jaya. Keywords: Ground Penetrating Radar, Subsurface structure, electromagnetic wave velocity

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Near-Surface Fault Structures of the Seulimuem Segment Based on Electrical Resistivity Model

Cited by 13 publications

References 3 publications

2d Inversion and Static Shift of Mt and Tem Data for Imaging the Geothermal Resources of Seulawah Agam Volcano, Indonesia

2d Inversion and Static Shift of Mt and Tem Data for Imaging the Geothermal Resources of Seulawah Agam Volcano, Indonesia

A Low-Cost Uav Based Application for Identify and Mapping a Geothermal Feature in Ie Jue Manifestation, Seulawah Volcano, Indonesia

Investigation of Shallow Fault Structures Using Ground Penetrating Radar Method in Gampong Pangwa Trienggadeng District, Pidie Jaya Regency

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